Bearing mount



Nov. 4, 195 H. w. MOPHERSON BEARING MOUNT Filed March 9, 1949 HAWQVWQMINVENTOR.

Patented Nov. 4, 1952 UNITED Pats NT or F E;

BEARING MOUNT- HZilZWeiilVIoPherson; Chicagmlll;

Application Marchw; 1949', s erial'Nd; 805

This invention relates to bearingimountwpar ticularly those employed inhydraulically oper-' ated turbines or rotatable devices :such" aswaterdrivensewage "and garbage disposal :devices.--

There r are many w ell known "bearing mounts;

some of which have been employed in related devices; but,; eachhaslimitations for the pref erred use of the bearingmount ofthisinventionaAn object ofthis invention is' to provide anew and improvedbearingmounta Another object of this invention is to providea new andimproved water-proof-- bearing mountof the class described! Another .object of this invention is to provide bearingmount that is characterizedby a reliving-,-

bell sealfl A'stilllfurther object of this invention isto-provid a.device of the class describedflwhich istsimp16 to build,.- economicalinservice; and possessed l of great durability-.

wfolaiiils, (o1. anal-r91) The foregoing andother..objects-.and"advanasillust'rated in'Fig. 1 and" Fig.-* 3-is a viewof thenut, retaining ring;and

ball' bearing assemblies.

Iii the drawings; wherein like members are given the same referencenumeral, a-sh'ell' or sup-'- porting: member 1-, having an outlet- 4";has posi-- tioned thereon, in water-tight relationship,'a'bow1 2 havinga design-"such that a portion-3 thereof extend's or projects into saidshell I and'definesa channelfi with-the sidewall thereof. This pro--jection 3 of the bowl 2 is provided with a con centric outlet. 6';Positioned to register with the outlet-6; and se'curedto the projection3' is a hollowsmember 8 havin a cutting and grinding sur-' face 19 ,upreferably frustro-conical in shape with longitudinalte'eth in the formof an Archimedes" spiral. Intermediate. the outlet 6 of--the"-proje'c"--tion :3 Land: hollowmember' 8 is akicker plate l I;

which maybe a;separate-memberior integral-with the projection l3'OIIhOllOW member 'hde'signed t'o deflect water from" the bowl towardsthe longitudinal axis of said hollow member 8.

supported fr omi the base of said shell on thebearing mount-Jo i a thisinventioniand in :space'd relationship. withsaidhollow memben 8 'isairot'atable member l2, preferably frustro-conicalim shape 1 and havingteeth which are also in i the form of an Archimedes spiral. Secured? tosaid rotatable member [2 in any suitable mannensuch as by'r0ds-'l4-,-isa-water'wheel i5 positioned in the=channel-5 defined by theside wall oftheshell 1 I and the projection 3 'o'f- -the bowl 2'. Thewater wheel-ispreferably 1 of :tire tangential-flowrtyp'e;

such. as the Pelton' wheeliillustrated Aniinletxl 1 is providedinTtheshell lgnwhaeby wateri'under pressure as directedagainst-the iriipelle'rstl 6 lot the" water wheel i 5'; and tangentiali. to--theouter'*'periphery o'f.- thei wheellnproperpvto'r rotate :th'e-wh'eeliandall rotatable :parts: connectedf therewith: Ant arcuateiconduit' l9;isaprovide'd" in the side :wallsiof Isaidfshell; l' andzibowli2l Y, The"openingl'of the conduit 1 9 "i'nthe shellisl is aligned:

with the inletr.lllwherebyiwater leaving Ithelwheel I 5'entersxrtherconduit 1| 9; rises" in 2 the conduit" to the'bowl' 2;vwhich :it I enters in: a whirlingmotion tothereby, flush 1 and? scrub.the-bowl.-

her [2 approximately centrally?- grinders, the waterfalls into theshellil and out theoutlet 4:

The'bearingmountof this invention is particu larly important in theabove application; tospre vent waterlfrom entering the bearings eitherfrom the water falling, ,onthe rotatable m'ember:;I2:o1-

risingiin the shell due:to-fioodingresulting from clogged drains.

In ithe' pref erred embodiment tot :thecinvention as applied .to the:pr'oblern in the above described art,.' the bottom 20 of: the :shell -l'islprovidedtwith a central hollow'bossZl having the'bottomwporetionflthereof tapped to receive a threadedrad-jlust ing plug 22 forashaft i3lpress-fitt'ed-xinto said. hollow boss 2!; A shoulder25-is'providedionzthe' shaft 23' to stop the longitudinal motion m one:

directionmof a ball b'earinghassembly 26";inrthe other direction"pressefitted i onto the" shafts-23;: The-longitudinal: movement OfithiSlowerball bearingassembly 26 ispreventeibya stop'or re taining rin 27',which ishsplit, andiipreferably' of spring steelor othersuitablemateria'l', forrease in inserting it in anannulari'ecessfzw'provided in the hollow boss 29 of the rotatablememberfiltThe: annular recess 28 is substantially above the wlower end of theboss29 to thereby provideanzi elongated hollow projection 30beneathnthe'low est section of the lowest ball bearing? assembly 262When the topof theihollow' boss 129': is: sealed'offi as laterdescribed, theshollowprojection 30"func=-.'

tions as az divingebell protection: for theubearingz:

As the waterleaves the bowl 2 it isioleflected bythe kicker plate I-l'inwardly; strikingwthe rotatable memr- Leaving; the

ing assembly 26 rests preventing longitudinal motion on the shaft in onedirection. A nut 33 engaging the threaded section 35 of the shaft 23prevents longitudinal movement of the upper ball bearing assembly in theother direction when the nut is screwed down upon the shaft until itcontacts the ball bearing assembly. When it is desirable to have morethan two ball bearing assemblies in the bearing mount, ball bearin as-,

semblies may be added intermediate those illustrated by using retainingrings on each side thereof.

To provide the protection of the diving-bell seal, the top of the hollowboss 29 must be hermetically sealed. This may be accomplished in variousways, as, for example, by first sealing a water-resistant imperviousmembrane 35, such as water-proof fabric, across the opening using anysuitable water-resistant impervious adhesive, such as rubber cement orthe like. To further reinforce this membrane 35 and provide additionalseal security, a rigid water-resistant impervious plate 36 is positionedover the membrane 35 and is then sealed to the rotatable member I2 withwater-resistant impervious adhesive. The plate 36 may be further sealedto the rotatable member l2 by providing an annular rib on the member [2around which a downward annular flange provided on the plate 36 may besnapped, similar to that sealing means employed for capping bottledbeverages, fruits, vegetables, jellies, and the like.

The ball bearing assemblies 26 described herein may be standardassemblies with inner and outer races--and are packed with a standardwater-resistant grease.

The device of this invention has been described with respect to itspreferred use; however, it is not to be construed as so restricted orlimited. It has a, wide variety of uses in many arts. Also, the scope ofthe invention is not to be limited to the particular constructionillustrated and described, as mechanical equivalents may be substitutedfor specific members and arrangements of parts may be changed withoutdeparting from the spirit and scope of the invention. For example, inlieu of the retaining ring arrangement illustrated and described,annular ribs may be provided in the boss of the rotatable member,although the cost of construction might be greater. The invention,therefore, is to be measured by the appended claims and construed asbroadly as the prior art will permit.

Having thus described my invention, what I claim as new and wish tosecure by United States Letters Patent is:

1. In combination, a shell adapted to contain a liquid, a shaft mountedin the shell and projecting upwardly through the liquid, a rotatablemember mounted on the upper end of the shaft for rotation about the axisof the shaft, and bearing means for supporting the rotatable member onthe shaft, said rotatable member having. a

4 downwardly opening recess into which the upper end of the shaftextends with the bearing means located within said recess and interposedbetween said upper end of the shaft and the rotatable member, the wallsof said recess being hermetically closed from the bearing meansupwardly, whereby the entrapment of air within the recess prevents theliquid in the shell from contacting the bearing means even though thelevel of the liquid rises above said bearing means.

2. In combination, a, shell adapted to contain a liquid, a shaft mountedin the shell and projecting upwardly through the liquid, a rotatablemember mounted on the upper end of the shaft for rotation about the axisof the shaft, bearing means for supporting the rotatable member on theshaft, said rotatable member having a hollow boss adapted to receive theupper end of the shaft with the bearing means located within the boss,interposed between the inner walls of the boss and the upper end of theshaft, and spaced from the lower end of the boss, and a removableclosure for the upper end of the boss, said closure hermetically sealingthe upper end of the boss, whereby air is entrapped within the boss asthe level of the liquid rises above the level of said bearing means tothereby keep said level from reaching said bearing means.

3. The combination with a shell, through which a liquid normally flows,of a rotatable member mounted in the shell and on bearing means forrotation about a vertical axis, said bearing means including avertically positioned shaft, a hollow boss on the rotatable memberadapted to receive the upper end of the shaft, and a bearing within theboss spaced from the bottom of the boss for rotatably supporting saidmember on said shaft. said boss being hermetically sealed at the topwhereby the building up of the liquid level within the shell cannotplace the liquid in contact with the bearing because of the entrapmentof air within said hermetically sealed boss.

4. The combination with a shell, through which a liquid normally flows,of a rotatable member mounted in the shell and on bearing means forrotation about a vertical axis, said bearing means including avertically positioned shaft, a hollow boss on the rotatable memberadapted to receive the upper end of the shaft, and a bearing within theboss spaced from the bottom wall of the boss for rotatably supportingsaid member on said shaft, said boss being hermetically closed at thetop by a water-resistant impervious membrane extending across the upperopen end of the boss, and reinforced by a rigid water-resistantimpervious plate, whereby the building up of the liquid level within theshell cannot place the liquid in contact with the bearing because of theentrapment of airwithin said hermetically sealed boss.

5. The combination with a shell, through which a liquid normally flows,of a rotatable member mounted in the shell and on bearing means forrotation about a vertical axis, said bearing means including avertically positioned shaft, a hollow boss on the rotatable memberadapted to receive the upper end of the shaft, and a bearing within theboss spaced from the bottom wall of the boss for rotatably mounting saidmember on said shaft, said boss being hermetically sealed at the topwhereby the building up of the liquid level within the shell cannotplace the liquid in contact with the bearing because of the entrapmentof air within said hermetically sealed boss.

6. In combination, a shell adapted to contain a liquid, a shaft membermounted in the shell and projecting upwardly through the liquid, asecond member mounted on the upper end of said shaft member for relativerotary movement, and bearing means for supporting said second member onsaid shaft member, said second member having a downwardly opening recessinto which the upper end of the shaft member extends with the bearingmeans located within said recess and interposed between said upper endof the shaft member and said second member, the walls of said recessbeing hermetically closed from the bearing means upwardly, whereby theentrapment of air within the recess prevents the liquid in the shellfrom contacting the bearing means even though the level of the liquidrises above said bearing means.

7. In combination with a shell through which a liquid normally flows, avertically positioned shaft mounted in the shell and having an upwardlyfacing shoulder, a rotatable member having a hollow boss adapted toreceive the upper end of the shaft, and bearing means for mounting therotatable member on said shaft, said bearing means including an innerrace resting upon said upwardly facing shoulder having means forclamping it firmly againstjsalijd shoulder, the lower end of saidhearing means being spaced from the lowerend of said bossj an'd saidboss being hermetically sealed at the; pod; whereby the building up ofliquid level within the shell cannot place the liquid in contactwith'tfhe bearing means because of the entrapment of air within saidhermetically sealed boss.

HAL WEIR MCPHERSON.

iimfiE mNcEs CITED The followijng sreferences are of record in the fileof this patent:

UNITED STATES PATENTS

